Cell Signalling and Transduction In the signal transduction mechanism known as protein phosphorylation All of these the signaling molecule binds to a surface receptor phosphorylated proteins act with enzymes to trigger the signal cascade receptor kinases play a key role in triggering the signal cascade All of these the signaling molecule binds to a surface receptor phosphorylated proteins act with enzymes to trigger the signal cascade receptor kinases play a key role in triggering the signal cascade ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is a hormone whose action requires a cell surface receptor? Progesterone Growth factors Adrenaline Nitric oxide Progesterone Growth factors Adrenaline Nitric oxide ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it allows hydrophilic signaling molecules to cross the plasma membrane None of these makes the receptor more likely to capture the signaling, molecule changes the shape and thus the enzymatic activity of the proteins involved allows hydrophilic signaling molecules to cross the plasma membrane None of these makes the receptor more likely to capture the signaling, molecule changes the shape and thus the enzymatic activity of the proteins involved ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In vasodilation, proper nerve signals sent to blood vessels cause All of these reduced blood pressure relaxation of smooth muscle cells the release of nitric oxide from endothelial cells All of these reduced blood pressure relaxation of smooth muscle cells the release of nitric oxide from endothelial cells ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following statements about G proteins is false? They are involved in signal cascades They become activated when bound to GDP They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides They are involved in signal cascades They become activated when bound to GDP They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following comes under the category of cell surface receptor? Enzyme linked receptors G protein linked receptors All of these Ion-channel linked receptors Enzyme linked receptors G protein linked receptors All of these Ion-channel linked receptors ANSWER DOWNLOAD EXAMIANS APP
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